Let's "kill 2 birds with one stone" and also fight the obesity crisis by having children pick weeds. Call it a "Synergy class between botany science and physica

Let's "kill 2 birds with one stone" and also fight the obesity crisis by having children pick weeds. Call it a "Synergy class between botany science and physical education". Edit: The suggestion that children learn a basic trade, while getting exercise, and providing economic benefit, seems very unpopular. Please suggest a better solution for these problems - maybe you think adults would benefit more from this?